People who have vaccinated two doses Pfizer vaccine about six months ago, almost do not have protection from the strain of COVID-19 Omicron, while vaccinated third, booster vaccine, protected from the virus. It is reported by RIA Novosti with reference to the results of a study conducted in the largest Israeli Medical Center named after Hamim Shiba.
The study was based on the study of the serum of medical center workers, vaccinated vaccine Pfizer. The subjects were divided into two groups on the number of doses of the drug. In one group, workers were vaccinated by two pfizer components about six months ago and having the right to a third dose, but not yet received it; In the second – received a booster dose.
“People who received the second dose of the vaccine five or six months ago, do not have any neutralizing ability against Oomikron. But the good news is that after the booster dose, it increases hundreds of times and significant protection appears,” the study says .
doctors compared the ability of antibodies in the blood of representatives of these two groups to neutralize the strains of Omicron and Delta. It is noted that two doses of PFizer are still protected from delta option. At the same time, the protective ability of the booster dose against ohomicron is significantly lower. “We still do not know whether this protection will decrease with time, we will check it later, and this is what we are working on now,” concluded in the medical center.
Previously, scientists from the UK found out that booster vaccinations can increase the efficiency of the vaccine in the fight against Omicron-strain coronavirus by 75 percent. They concluded that two standard vaccine vaccinations from Astrazeneca and Pfizer-Biontech provide a much lower level of protection against Omicron strain than from Delta strain. With the introduction of a third dose, the effectiveness of drugs increases to 70-75 percent.